نتایج جستجو برای: pavement design
تعداد نتایج: 965810 فیلتر نتایج به سال:
Abstract Since 2011, the change in climatic characteristics has emerged as one of three most common environmental risks today. Global warming forecasts warn that by 2100, our planet could warm an average 3.5 to 7.5 °C. In Europe, over last 140 years, annual air temperature risen about 1.5 Slovakia, it was increase 1.7 - 1.8 °C on average. The consequences these changes road construction are imm...
This paper introduces the maximum and minimum pavement temperatures of Estonian asphalt pavements in accordance with calculation models developed for North America Norway. Historical meteorological data from 1992 to 2021 obtained 25 different weather stations Estonia were used as an input respective models. Comparison between demonstrated high variability design temperatures, thus significantly...
An accurate and regular survey of the road surface distresses is a key factor for pavement rehabilitation design and management, allowing public managers to maximize the value of the continuously limited budgets for road improvements and maintenance. Manual pavement distress surveys are labor-intensive, expensive and unsafe for highly-trafficked highways. Over the years, automated surveys using...
A Mathematical Model for Predicting Isothermal Soil Moisture Profiles Using Finite Difference Method
Subgrade moisture content varies with environmental and soil conditions and has significant influence on pavement performance. Therefore, it is important to establish realistic estimates of expected subgrade moisture contents to account for the effects of this variable on predicted pavement performance during the design stage properly. The initial boundary soil suction profile for a given pavem...
Pavement crack detection plays an important role in pavement maintaining and management. The threedimensional (3D) pavement crack detection technique based on laser is a recent trend due to its ability of discriminating dark areas, which are not caused by pavement distress such as tire marks, oil spills and shadows. In the field of 3D pavement crack detection, the most important thing is the ac...
The optimization of a pavement management system necessitates the knowledge on the actual values of pavement condition parameters, actual pavement condition improvement as related to the use of various rehabilitation strategies, and scope of pavement deterioration before and after rehabilitation. The data for six pavement condition parameters (bearing capacity, unevenness, rut depth, macro text...
1 2 Resilient modulus test is the recommended test to characterize subgrade soil for 3 pavement design in 1993 AASHTO pavement design guide as well as new proposed 4 Mechanistic-Empirical Pavement Design Guide (MEPDG). This test requires significant 5 resources including high level of technical capability to conduct. For smaller projects where 6 costly and complex resilient modulus testing is n...
BACKGROUND Human settlements are of increasing interest to ecologists, a fact demonstrated by the recent cluster of book-length treatments of the topic (Forman 2008, McDonnell et al. 2009, Gaston 2010, Niemelä et al. 2011, Wilson 2011, Forman 2014). The natural world as a fascinating feature of towns and cities has a much longer history (e.g. Fitter 1945), and has also played a strong part in l...
Kim, Daehyeon, Shin, Youngjin, and Siddiki, Nayyar. “Geotechnical Design Based on CPT and PMT” Final Report FHWA/IN/JTRP-2009/XX, SPR 3106, Joint Transportation Research Program, Purdue University, September 2008
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